This study presents the results of a comprehensive investigation of the “Hungarian mine green” pigment which was precipitated from drainage water containing basic Cu sulfates and represented an important commodity with the peak of its production in 16th and 17th century in Banská Bystrica region (Slovakia). Morphological and compositional fingerprints of this pigment have been […]

This study reveals that heating lead palmitate in linseed oil leads to the formation of mixed lead palmitate–stearate compounds and a metastable high-temperature polymorph with unique structural features. These transformations, even at moderate heating, suggest complex chemical changes that may contribute to long-term degradation in oil paintings. The findings emphasize the need for careful temperature […]

This study reports the first cationic chalcogenaboranes that retain the same skeletal electron pair count as their neutral counterparts, defying Wade’s rules. The ionization significantly enhances their electrophilicity, enabling reactions with very weak bases. Furthermore, it allows for regioselective control over interactions with hard and soft bases by modulating the LUMO. https://onlinelibrary.wiley.com/doi/10.1002/anie.202419677